Focus servo subsystem design for hybrid magneto-optical recording testing system

Qing Zhu; Wendong Xu

doi:10.1117/12.757600

21 November 2007 Focus servo subsystem design for hybrid magneto-optical recording testing system

Qing Zhu, Wendong Xu

Proceedings Volume 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography; 68271K (2007) https://doi.org/10.1117/12.757600
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Astigmatism method was employed to detect focus error signal in hybrid recording testing system. Frequency characteristics of piezoelectric nano-positioner were measured, based on which we designed focus servo controller using available frequency-domain integrated correction method. The requirement for disk vertical deviation is also discussed according to system expected characteristics. Then we choose air bearing turntable motor to meet the disk deviation requirement.

Citation Download Citation

Qing Zhu and Wendong Xu "Focus servo subsystem design for hybrid magneto-optical recording testing system", Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68271K (21 November 2007); https://doi.org/10.1117/12.757600

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available